I don't want to modify the system path in Windows 7, or the user path either.

But when I start up a Command Prompt (cmd.exe), I would like the path within the command prompt to be modified to include a couple of additional directories on the path that I would like searched for when I type in commands.

I thought earlier versions of Windows had the ability via a .pif file, and there used to be an ability to put variables in the autoexec.bat (though that might have set the variables for all windows apps and this I want to avoid.